CN110893315A

CN110893315A - Biological treatment equipment for cooking fume and waste gas in catering industry

Info

Publication number: CN110893315A
Application number: CN201811066293.8A
Authority: CN
Inventors: 张东光
Original assignee: Beijing Dongfang Boao Kitchen Equipment Co Ltd
Current assignee: Beijing Dongfang Boao Kitchen Equipment Co Ltd
Priority date: 2018-09-13
Filing date: 2018-09-13
Publication date: 2020-03-20
Anticipated expiration: 2038-09-13
Also published as: CN110893315B

Abstract

The invention discloses a biological treatment device for cooking fume waste gas in catering industry, which is mainly characterized by comprising a fume collecting hood, a fan and a biological treatment device, wherein a fan suction inlet is communicated with the fume collecting hood, a fan air outlet is connected to the biological treatment device, the biological treatment device comprises a storage tank, a suction pump and an airflow tank, the fan air outlet is connected to one end of the airflow tank, which is far away from the fan air outlet, is provided with a water return pipe, and the other end of the water return pipe is connected with the storage tank; a plurality of partition plates are arranged in the airflow box, and the partition plates and the airflow box form an S-shaped channel; one end of the S-shaped channel is communicated with an air outlet of the fan; the water suction end of the water suction pump extends into the storage tank, the water outlet end of the water suction pump is connected with a pipeline, and one end of the pipeline, which is far away from the water suction pump, extends to one end of the S-shaped channel, which is far away from the water return pipe; the water return pipe and the upper part are connected with an exhaust pipe; glass wool is filled in the S-shaped channel. The invention has the advantages of biological treatment capability of waste gas, lower equipment and convenient installation and maintenance.

Description

Biological treatment equipment for cooking fume and waste gas in catering industry

Technical Field

The invention relates to the field of catering industry oil smoke waste gas treatment, in particular to a biological treatment device for catering industry oil smoke waste gas.

Background

The composition of the oil smoke seriously harms human health. The long-term oil smoke environment is easy to induce respiratory tract and lung diseases. Not only the working environment of the staff is influenced, but also the surrounding resident environment and the living health are influenced. At present, aiming at the treatment of the pollutants, the main treatment methods comprise: catalytic combustion, absorption, activated carbon adsorption, plasma-catalytic oxidation and biological treatment. The biological treatment method has unique advantages, and achieves the purpose of purifying waste gas by using microorganisms to take organic matters in oil smoke as energy under certain environment and converting the organic matters into nontoxic and harmless CO2 and H2O through absorption and degradation.

In the biological treatment of waste gas aiming at catering industry, the path of gas moving from bottom to top is generally used at present, so that the gas needs to pass through a plurality of filter plates which are arranged up and down, and in the biological treatment of waste gas, the contact time of the waste gas and microorganisms is long, otherwise, the microorganisms can not completely decompose organic matters in the waste gas. In summary, in the biological treatment method using waste gas, the equipment is generally high, and installation and maintenance are inconvenient.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide biological treatment equipment for cooking fume and waste gas in catering industry, which has the advantages of biological treatment capability of waste gas, lower equipment and convenience in installation and maintenance.

The technical purpose of the invention is realized by the following technical scheme:

a biological treatment device for cooking fume waste gas in catering industry comprises a fume collecting hood, a fan and a biological treatment device, wherein a fan suction inlet is communicated with the fume collecting hood, a fan air outlet is connected to the biological treatment device, the biological treatment device comprises a storage tank, a suction pump and an airflow box, the fan air outlet is connected to one end of the airflow box, a water return pipe is arranged at one end of the airflow box, which is far away from the fan air outlet, one end of the water return pipe is connected with the airflow box, and the other end of the water return pipe is connected; a plurality of partition plates which are arranged in the horizontal direction are arranged in the airflow box, the partition plates are fixed in the airflow box in parallel, and the partition plates and the airflow box form an S-shaped channel; one end of the S-shaped channel is communicated with an air outlet of the fan, and the other end of the S-shaped channel is communicated with the water return pipe; the water suction end of the water suction pump extends into the storage tank, the water outlet end of the water suction pump is connected with a pipeline, and one end of the pipeline, which is far away from the water suction pump, extends to one end of the S-shaped channel, which is far away from the water return pipe; the water return pipe and the upper part are connected with an exhaust pipe; and glass wool is filled in the S-shaped channel.

By adopting the technical scheme, when the oil smoke collecting hood is used, the oil smoke collecting hood is arranged above a cooking bench and is used for collecting oil smoke generated by the cooking bench, the air suction inlet of the fan is connected with the oil smoke collecting hood, the air suction inlet of the fan generates negative pressure in the oil smoke collecting hood so that the oil smoke enters the fan, the oil smoke is pressurized by the fan and then is discharged from the air outlet of the fan, and the air outlet of the fan is connected with one end of the S-shaped channel; contain the liquid of microorganism in the bin, liquid carries the pipeline in through the suction pump, the one end that the suction pump was kept away from to the pipeline also stretches S-shaped passageway and keeps away from wet return one end, the gaseous mixture that makes the liquid that the pipeline flows and the fan sent to, the oil smoke in the gas meets the emergence reaction with the microorganism in the one end of S-shaped passageway with the liquid, then because the glass cotton is porous structure, thereby make gaseous S-shaped passageway along with the division board formation remove, the oil smoke can be absorbed by the microorganism in the S-shaped passageway and decompose, and from the clean air of blast pipe discharge, and liquid passes through in the wet return gets back the bin again, because division board horizontal arrangement, thereby make the high reduction of air current case, make things convenient for staff' S installation and maintenance.

The invention is further configured to: the smoke collecting hood is provided with a plurality of smoke collecting hoods which are positioned at the same height, the storage box is horizontally fixed on the upper surface of the smoke collecting hoods, and the airflow box is horizontally fixed on the upper surface of the storage box; the water suction pump is arranged in the storage tank.

Through adopting above-mentioned technical scheme, collection petticoat pipe has a plurality of distributions in the top of a kitchen range, and the bin level is fixed at the upper surface of collection petticoat pipe, and airflow box level is fixed at the upper surface of bin, makes collection petticoat pipe, bin and airflow box distribute in the top of a kitchen range from top to bottom, makes its structure more reasonable, and it is little to occupy indoor area, and the installation is maintained conveniently.

The invention is further configured to: a plurality of smoke absorbing holes are formed in the same side of the smoke collecting cover, the smoke absorbing holes are connected with a common pipe, the smoke absorbing holes of the smoke collecting covers are communicated with the same common pipe, and an air suction inlet of the fan is connected to the common pipe.

By adopting the technical scheme, the same common pipe is used for connecting the plurality of smoke absorbing holes, so that the plurality of smoke collecting covers can absorb oil smoke simultaneously at a plurality of positions through one fan, the number of equipment is reduced, the structure is simple, and the installation and the maintenance are convenient.

The invention is further configured to: a cover door is arranged at the smoke suction hole, one side of the cover door is hinged to the inner side of the smoke collecting hood, and a hinged shaft of the cover door and the smoke collecting hood is vertically arranged; an operating rod is fixed on the cover door, the central line of the operating rod is collinear with the hinged shaft of the cover door and the smoke collecting hood, and the operating rod extends outside the smoke collecting hood.

By adopting the technical scheme, when the cooking bench below the fume collecting hood does not work, a worker can rotate the operating rod to enable the cover door to block the fume suction hole, so that the other fume collecting hoods have better fume absorption effect; on the contrary, when the cooking bench below the fume collecting hood works, the operating rod is rotated reversely by a worker, and the operating rod drives the cover door to rotate around the hinged shaft of the hood body, so that the cover door opens the fume suction hole.

The invention is further configured to: the smoke collecting hood comprises a hood body and a cover plate, the hood body is a cuboid with an opening at the lower part, the cover plate is in a groove shape, the opening of the cover plate faces downwards, a smoke inlet hole is formed in the cover plate, and the cover plate is detachably mounted at the opening of the hood body.

Through adopting above-mentioned technical scheme, apron demountable installation is at the lower part opening part of the cover body, and after the apron used a period, the apron can be followed the cover body and dismantled, and the convenience is convenient to the apron and the inside washing of the cover body, convenient maintenance.

The invention is further configured to: the air outlet of the fan is provided with a vertical mixed flow pipe, the air outlet of the fan is connected to the airflow box through the mixed flow pipe, and the lower end of the mixed flow pipe is connected to the airflow box; one end of the pipeline, which is far away from the water suction pipe, extends into the mixed flow pipe, and a nozzle which is vertically upward is arranged on the water suction pipe.

Through adopting above-mentioned technical scheme, seted up spout up on the pipeline, spout spun liquid contains the microorganism of handling the oil smoke to adopt gas downwards, the ascending mode of liquid, gas-liquid mixture makes liquid and gaseous intensive mixing, purifying effect is good.

The invention is further configured to: an orbiting scroll is arranged below the nozzle and comprises a plurality of blades which are distributed in a radial manner in the circumferential direction and are inclined to the axis of the pipeline.

Through adopting above-mentioned technical scheme, gaseous at the in-process through the vortex dish, gaseous direction that receives the blade produces the vortex form, further increases gaseous and microbial's mixture, and purifying effect is good.

The invention is further configured to: the number of the mixed flow pipes is multiple, and the plurality of mixed flow pipes are internally provided with an orbiting scroll; the conduit extends into each of the mixing tubes.

Through adopting above-mentioned technical scheme, the mixed flow pipe sets up a plurality ofly, makes gas divide into many when entering into the mixed flow pipe to make the gas and the mixing of liquid relatively more even, purifying effect is good.

The invention is further configured to: the air flow box is provided with an outlet at one end of the S-shaped channel far away from the water return pipe, and the outlet is provided with a bin door which is used for covering the outlet; the glass wool of the S-shaped channel at the outlet is separately arranged, and the area of the glass wool projected to the plane of the outlet is smaller than that of the outlet.

Through adopting above-mentioned technical scheme, set up the export on the air current case, the exit position is provided with solitary glass cotton, after glass cotton process a period of use, because glass cotton has the filter effect to the impurity that contains at S-shaped passageway entrance is more, and the staff opens the door and conveniently takes out glass cotton, convenient maintenance.

The invention is further configured to: one side of the bin door is hinged to the airflow box, at least two lug plates are arranged on the bin door opposite to the other side hinged to the airflow box, a stud is fixedly arranged on the airflow box, the lug plates correspond to the stud, and a butterfly nut is connected to the stud in a threaded mode and used for pressing the lug plates.

Through adopting above-mentioned technical scheme, butterfly nut threaded connection is on the double-screw bolt, and when the otic placode pressed down at butterfly nut, made the door extrude on the air current case, guaranteed the leakproofness of air current case, when needing to change the glass cotton, the staff directly takes off butterfly nut, makes the door open can.

In conclusion, the invention has the following beneficial effects:

1. the air flow box and the plurality of horizontally arranged partition plates form an S-shaped channel, and glass wool is placed in the S-shaped channel, so that the air horizontally moves under the condition of protecting the reaction time of microorganisms and oil smoke, the height of the air flow box is reduced, and the air flow box is convenient to install and maintain;

2. the cover plate is detachably arranged at the opening at the lower part of the cover body, and after the cover plate is used for a period of time, the cover plate can be detached from the cover body, so that the cover plate and the interior of the cover body can be conveniently cleaned, and the maintenance is convenient;

3. through seting up the export on the air current case, the exit position is provided with solitary glass cotton, after glass cotton process a period of use, because glass cotton has the filter effect to the impurity that contains at S-shaped passageway entrance is more, and the staff opens the door and conveniently takes out glass cotton, convenient maintenance.

Drawings

FIG. 1 is a schematic view of an installation structure of a biological treatment device for cooking fume and waste gas in catering industry;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 2;

FIG. 4 is a sectional view showing the internal structure of a biological treatment apparatus for cooking fumes and exhaust gases in catering industry;

fig. 5 is an enlarged view of the portion C of fig. 4.

Reference numerals: 1. a smoke collecting hood; 11. a cover body; 111. a smoking hole; 12. a cover plate; 121. a smoke inlet hole; 13. a stopper; 14. covering the door; 15. an operating lever; 2. a fan; 3. a biological treatment device; 31. a storage tank; 32. a water suction pump; 33. an airflow box; 34. a partition plate; 35. a water return pipe; 36. an exhaust pipe; 37. an S-shaped channel; 38. glass wool; 4. sharing the tubes; 5. a mixed flow tube; 6. a pipeline; 61. a spout; 7. a rotating scroll; 71. a blade; 81. a bin gate; 82. a butterfly nut; 83. a stud; 84. an ear plate; 9. a cooking bench.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in fig. 1, and the terms "bottom" and "top", "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The utility model provides a biological treatment equipment of catering trade oil smoke waste gas for install the top at top of a kitchen range 9 in the kitchen to purify the oil smoke that top of a kitchen range 9 produced and absorb, refer to figure 1, including collection petticoat pipe 1, fan 2 and biological treatment device 3, collection petticoat pipe 1 is located top of a kitchen range 9 directly over, and the inlet scoop of fan 2 is connected to collection petticoat pipe 1, and the air outlet of fan 2 is connected to on the biological treatment device 3. After the fan 2 is started, the suction inlet of the fan 2 generates negative pressure in the fume collecting hood 1, and after the oil fume reaches the fume collecting hood 1, the oil fume is sucked into the fan 2 and discharged into the biological treatment device 3 from the air outlet of the fan 2, so that the purpose of absorption and purification is achieved.

Referring to fig. 1 and 2, the fume collecting cover 1 is provided with a plurality of fume collecting covers, each fume collecting cover 1 includes a cover body 11 and a cover plate 12, the cover body 11 is a rectangular parallelepiped housing with an open lower portion, the cover bodies 11 are at the same height, the fume suction holes 111 are opened on the same side of the cover body 11, the cover plate 12 is in a groove shape, a plurality of fume inlet holes 121 are opened at the bottom of the cover plate 12, and the groove-shaped opening of the cover plate 12 is downwardly installed at the lower opening of the cover body 11. Referring to fig. 3, a plurality of stoppers 13 are disposed on the lower surface of the cover 11, one end of each stopper 13 is rotatably connected to the cover 11, and the other end of each stopper 13 is rotatable to a position below the cover 12 to block the cover 12, so that the cover 12 is detachably fixed on the cover 11. The oil smoke enters into the cover body 11 in the smoke inlet hole 121, the smoking hole 111 of the cover body 11 is connected with a common pipe 4, and the common pipe 4 is horizontally arranged, the smoking hole 111 of each cover body 11 is connected to the same common pipe 4, the suction inlet of the fan 2 is connected to the common pipe 4, and when the fan 2 is started, the fan 2 can enable the oil smoke in the cover bodies 11 to enter into the common pipe 4 through the respective smoking hole 111.

Referring to fig. 2, a cover door 14 is provided at a smoke suction hole 111 of the hood 11, the cover door 14 is used for covering the smoke suction hole 111, and one side of the cover door 14 is hinged at the inner side of the hood 11, the cover door 14 is vertically arranged with a hinge shaft of the hood 11, an operating rod 15 is further fixed on the cover door 14, the operating rod 15 vertically extends upwards out of the smoke collecting hood 1, and a central line of the operating rod 15 is collinear with the hinge shaft of the cover door 14 and the hood 11. When the cooking bench 9 below the fume collecting hood 1 does not work, the operator can rotate the operating rod 15 to enable the cover door 14 to block the fume suction hole 111, so that the other fume collecting hoods 1 have better fume absorption effect; on the contrary, when the cooking range 9 below the smoke collecting cover 1 is operated, the operator reversely rotates the operation lever 15, and the operation lever 15 drives the cover door 14 to rotate around the hinge shaft with the cover body 11, so that the cover door 14 opens the smoke suction hole 111.

Referring to fig. 1, a mixed flow pipe 5 is disposed between the air outlet of the blower 2 and the biological treatment device 3, so that the air outlet of the blower 2 is connected to the biological treatment device 3 through the mixed flow pipe 5. The mixed flow pipe 5 is vertically arranged, the mixed flow pipes 5 are provided with a plurality of, and the biological treatment device 3 is arranged at the lower end of the mixed flow pipe 5. The oil smoke enters the biological treatment device 3 through a plurality of mixed flow pipes 5.

Referring to fig. 4, the biological treatment apparatus 3 includes a storage tank 31, a suction pump 32 and an airflow tank 33, the storage tank 31 is a cuboid and is fixedly disposed on the upper surface of the fume collecting hood 1, the airflow tank 33 is a cuboid and is fixedly disposed on the upper surface of the storage tank 31, the storage tank 31 is used for containing the liquid containing the vitamins, the suction pump 32 is mounted in the storage tank 31, the suction end of the suction pump 32 extends into the storage tank 31, the water outlet end of the suction pump 32 is connected with a pipeline 6, one end of the pipeline 6 far away from the suction pump 32 is divided into a plurality of branches, and each branch corresponds to one mixed flow pipe 5 and extends into the mixed flow pipe 5. Referring to fig. 5, an upward nozzle 61 is formed on the duct 6, the nozzle 61 is located at the center of the mixing tube 5, the nozzle 61 is conical, the liquid sprayed from the nozzle 61 contains microorganisms for treating the soot, and the liquid is mixed by gas-liquid in a mode that the gas is downward and the liquid is upward, so that the liquid and the gas are fully mixed, a vortex disc 7 is further arranged in the mixing tube 5, the vortex disc 7 is located below the nozzle 61, the vortex disc 7 comprises a plurality of vanes 71, the plurality of vanes 71 are distributed in a radial manner in the circumferential direction, and the vanes 71 are inclined to the axis of the duct 6. During the process of the gas passing through the vortex disk 7, the gas is guided by the blades 71 to generate a vortex shape, and the mixing of the gas and the microorganisms is further increased.

Referring to fig. 2, a plurality of partition plates 34 are disposed in the airflow box 33, the partition plates 34 are arranged in the airflow box 33 in parallel in the horizontal direction and are integrated with the airflow box 33, each partition plate 34 has three sides fixed to the inner wall of the airflow box 33, so that the plurality of partition plates 34 and the airflow box 33 form an S-shaped channel 37, glass wool 38 is filled in the S-shaped channel 37, the lower end of the mixed flow pipe 5 is connected to one end of the S-shaped channel 37, which is away from the mixed flow pipe 5, is provided with a return pipe 35, one end of the return pipe 35 is connected to the airflow box 33 and is communicated with the S-shaped channel 37, and the other end is connected to the storage box 31, so that the liquid flowing out from the end of the S-shaped channel 37 enters the storage box 31, and thus, microorganisms in the S-shaped channel 37 can. In order to discharge the gas to the atmosphere after passing through the S-shaped passage 37, an exhaust pipe 36 is connected to an upper portion of the return pipe 35, and the exhaust pipe 36 is disposed vertically. Because the partition plate 34 is horizontally arranged, the contact time of microorganisms and gas is the length of the S-shaped channel 37, so that the reaction time with oil smoke in the biological treatment process is sufficient, and on the other hand, the height of the airflow box 33 is ensured to be lower, so that the biological treatment device is more suitable for installation and maintenance of workers.

Referring to fig. 4, when the oil smoke just enters the airflow box 33, the oil smoke may contain a part of impurities, and since the glass wool 38 located in the S-shaped channel 37 also has an effect of filtering the impurities, an outlet is opened at an end of the airflow box 33 close to the mixed flow pipe 5, a bin door 81 is arranged at the outlet, and the bin door 81 is used for covering the outlet; one side of the bin door 81 is hinged to the airflow box 33, at least two lug plates 84 are arranged on the bin door 81 opposite to the other side hinged to the airflow box 33, a stud 83 is fixedly arranged on the airflow box 33, the lug plates 84 correspond to the stud 83, a butterfly nut 82 is in threaded connection with the stud 83, the butterfly nut 82 is used for pressing the lug plates 84, the glass wool 38 located at the outlet of the S-shaped channel 37 is independently arranged, and the area of the glass wool projected to the plane of the outlet is smaller than the area of the outlet. Thus, after a period of use, the worker can open the door 81 to remove the glass wool 38 from the outlet and replace it.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a biological treatment equipment of catering trade oil smoke waste gas, includes collection petticoat pipe (1), fan (2) and biological treatment device (3), fan (2) inlet scoop and collection petticoat pipe (1) intercommunication, and fan (2) air outlet is connected on biological treatment device (3), its characterized in that: the biological treatment device (3) comprises a storage tank (31), a water suction pump (32) and an airflow box (33), an air outlet of the fan (2) is connected to one end of the airflow box (33), a water return pipe (35) is arranged at one end, far away from the air outlet of the fan (2), of the airflow box (33), one end of the water return pipe (35) is connected with the airflow box (33), and the other end of the water return pipe is connected with the storage tank (31); a plurality of partition plates (34) which are arranged in the horizontal direction are arranged in the airflow box (33), the partition plates (34) are fixed in the airflow box (33) in parallel, and the partition plates (34) and the airflow box (33) form an S-shaped channel (37); one end of the S-shaped channel (37) is communicated with an air outlet of the fan (2), and the other end of the S-shaped channel is communicated with the water return pipe (35); the water suction end of the water suction pump (32) extends into the storage tank (31), the water outlet end of the water suction pump (32) is connected with a pipeline (6), and one end, far away from the water suction pump (32), of the pipeline (6) extends to one end, far away from the water return pipe (35), of the S-shaped channel (37); an exhaust pipe (36) is connected with the upper part of the water return pipe (35); and the S-shaped channel (37) is filled with glass wool (38).

2. The biological treatment equipment for catering oil fume and waste gas as claimed in claim 1, wherein the biological treatment equipment comprises: the device comprises a plurality of fume collecting hoods (1), wherein the fume collecting hoods (1) are positioned at the same height, a storage box (31) is horizontally fixed on the upper surface of the fume collecting hoods (1), and an airflow box (33) is horizontally fixed on the upper surface of the storage box (31); the water suction pump (32) is arranged in the storage tank (31).

3. The biological treatment equipment for catering oil fume and waste gas as claimed in claim 2, wherein the biological treatment equipment comprises: a plurality of smoking holes (111) have all been seted up to the homonymy of collection petticoat pipe (1), and smoking hole (111) are connected with and manage (4) altogether, and smoking hole (111) of a plurality of collection petticoat pipes (1) communicate in same and manage (4) altogether, and the inlet scoop of fan (2) connects on managing (4) altogether.

4. The biological treatment equipment for catering oil fume and waste gas as claimed in claim 3, wherein the biological treatment equipment comprises: a cover door (14) is arranged at the smoke suction hole (111), one side of the cover door (14) is hinged to the inner side of the smoke collecting hood (1), and a hinged shaft of the cover door (14) and the smoke collecting hood (1) is vertically arranged; an operating rod (15) is fixed on the cover door (14), the center line of the operating rod (15) is collinear with the hinged shaft of the cover door (14) and the smoke collecting hood (1), and the operating rod (15) extends to the outer side of the smoke collecting hood (1).

5. The biological treatment equipment for catering oil fume and waste gas as claimed in any one of claims 1 to 4, which is characterized in that: the smoke collecting hood (1) comprises a hood body (11) and a cover plate (12), the hood body (11) is a cuboid with an opening at the lower part, the cover plate (12) is groove-shaped, the opening of the cover plate (12) faces downwards, a smoke inlet hole (121) is formed in the cover plate (12), and the cover plate (12) is detachably mounted at the opening of the hood body (11).

6. The biological treatment equipment for catering oil fume and waste gas as claimed in claim 1, wherein the biological treatment equipment comprises: the air outlet of the fan (2) is provided with a vertical mixed flow pipe (5), the air outlet of the fan (2) is connected with the airflow box (33) through the mixed flow pipe (5), and the lower end of the mixed flow pipe (5) is connected with the airflow box (33); one end of the pipeline (6) far away from the water suction pipe extends into the mixed flow pipe (5), and the water suction pipe is provided with a nozzle (61) which is vertically upward.

7. The catering trade oil smoke waste gas biological treatment equipment according to claim 6, characterized in that: an orbiting scroll (7) is arranged below the nozzle (61), the orbiting scroll (7) comprises a plurality of blades (71), the plurality of blades (71) are distributed in a radial mode in the circumferential direction, and the blades (71) are inclined to the axis of the pipeline (6).

8. The biological treatment equipment for catering oil fume and waste gas as claimed in claim 7, wherein the biological treatment equipment comprises: a plurality of mixed flow pipes (5) are provided, and an orbiting scroll (7) is arranged in each mixed flow pipe (5); the duct (6) extends into each mixing tube (5).

9. The biological treatment equipment for catering oil fume and waste gas as claimed in claim 1, wherein the biological treatment equipment comprises: an outlet is formed in one end, away from the water return pipe (35), of the airflow box (33) located in the S-shaped channel (37), a bin door (81) is arranged at the outlet, and the bin door (81) is used for covering the outlet; the glass wool (38) of the S-shaped channel (37) at the outlet is separately arranged and the area projected to the plane of the outlet is smaller than that of the outlet.

10. The biological treatment equipment for catering oil fume and waste gas as claimed in claim 9, wherein the biological treatment equipment comprises: one side of the bin door (81) is hinged to the airflow box (33), at least two lug plates (84) are arranged on the bin door (81) relative to the other side hinged to the airflow box (33), a stud (83) is fixedly arranged on the airflow box (33), the lug plates (84) correspond to the stud (83), a butterfly nut (82) is connected to the stud (83) in a threaded mode, and the butterfly nut (82) is used for pressing the lug plates (84).